Overview
What this challenge is about.
Add a Test Harness to an Untested Open-Source CLI. Intermediate challenge in code. Writing production code that solves real engineering problems, earn a bloc...
The Brief
What you'll do, and what you'll demonstrate.
Bring three critical modules of an untested OSS CLI from 8 percent to 75 percent meaningful test coverage and ship the work as reviewable PRs.
This is not a coding exercise. It is the work a software engineer does between a Jira ticket and a merged PR. That distinction matters to every hiring manager who has seen candidates solve LeetCode problems and none who have shipped production code under real constraints.
When you finish, you will have something most graduates do not: a real-world deliverable, verified by Ewance, that you can show to a hiring manager and say "I did this. Here is the proof."
Earning criteria — what you'll demonstrate
- Distinguish characterization tests from specification tests in a legacy codebase
- Configure a CI coverage gate that does not become a rubber stamp
- Write a minimal failing test for a real bug before fixing it
- Trade off coverage targets against test maintenance cost
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Software Construction
Bachelor · Software Engineering
Strong alignment
This challenge maps to Software Construction at the Bachelor level. It sharpens the same practical skills your coursework expects — but in a real industry context with actual constraints and deliverables.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Unit Testing
Apply unit testing to solve real industry problems and demonstrate production-level capability.
- Integration Testing
Apply integration testing to solve real industry problems and demonstrate production-level capability.
- Test Coverage
Apply test coverage to solve real industry problems and demonstrate production-level capability.
- Characterization Testing
Apply characterization testing to solve real industry problems and demonstrate production-level capability.
- Ci Cd
Apply ci cd to solve real industry problems and demonstrate production-level capability.
- Code Review
Apply code review to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles: